Smalltooth dragonfish (Pachystomias microdon) fish species and information / pictures of Smalltooth dragonfish - Pachystomias microdon

Smalltooth dragonfish (Pachystomias microdon) fish species information

Scientific Name
Pachystomias microdon

Common Name
Smalltooth dragonfish

Biology
Dorsal spines (total): 0; Dorsal soft rays (total): 20-24; Anal spines: 0; Anal soft rays: 23 - 28. Body moderately elongated, slightly compressed. Snout shorter than eye. Jaws slender, gape slightly curved upward. Barbel slender, tapering without a bulb. Velvety dark brown to black (Ref. 37473).

Classification

Classified By

G?nther, 1878

Class

Ray-finned fishes (Actinopterygii)

Order

Lightfishes and Dragonfishes (Stomiiformes)

Family

Barbeled dragonfishes (Stomiidae)

Distribution

Region

Eastern Atlantic

Distribution

Eastern Atlantic: scattered records from 50?N-31?N, then between 16?N-18?S and from 28?S-37?S but not taken close to the continent south of the equator. Western Atlantic: scattered records from 40?N-13?N. Also known from the Indian and Pacific oceans. South China Sea (Ref.74511).

Range

50°N - 37°S, 65°W - 154°W

Environment

Climate

Deep-water

Water Temperature From

Unknown °C

Water Temperature To

Unknown °C

Depth From - meters

660 m

Depth To - meters

4000 m

Zone

bathyalpelagic

Environment

Marine; bathypelagic; depth range 660 - 4000 m (Ref. 74511)

Trophic Level

4.2 s.e. 0.73 Based on food items.

Occurs in Marine / Salt water

True

Occurs in Brackish water

False

Occurs in Fresh Water

False

Occurs on Reefs

False

Is kept in Aquariums

False

Physical Size and Genetics

Maximum Length

22.1 cm

Common Length

Unknown cm

Phylogenetic Diversity Index

PD50 = 1.0000 many relatives (e.g. carps) 0.5 - 2.0 few relatives (e.g. lungfishes)

Human Uses and Population

Human Uses

Unknown

Vulnerability

Low to moderate vulnerability (33 of 100)

Resilience

Medium, minimum population doubling time 1.4 - 4.4 years (Preliminary K or Fecundity.)

Threat To Humans

Harmless

IUCN Red List Status

Not Evaluated